Okay, so take this with a grain of salt, but yes. I have the same flasher (7000 sreies) and I have yet to remove it, but I have disconnected it completely with the only symptom is the stop sign/buttwacker lights on the console no longer working (which you'll likely be removing this anyways).
I highly recommend taking the anode and ground off the box and check everything, make sure it still cranks and you didn't mess up an interlock. I don't think these are tied into the interlock (if your bus has one) but hey, better to be safe.
Once you do that and all works, everything else can be removed from the box, and then follow the wires and remove them (or repurpose them).
Now, the reason I say take this lightly is that while your unit is a Weldon 7000 as is mine, your looks different then mine. Mine is skinnier and a bit longer IIRC.